Digital image file including optical code

1. A digital image file, comprising:

an image portion including a first digital image;

a separate information portion including a second digital image of a digital code encoding information associated with or derived from the first digital image, the second digital image separate and different from the first digital image; and

wherein when rendered visible the second digital image is a machine-readable optical code.

2. The digital image print of claim 1 , wherein the encoded information includes image attributes, image pixel statistics, image object information, a URI, or semantic information.

3. The digital image file of claim 1 , wherein the encoded information is encrypted.

4. The digital image file of claim 1 , wherein the machine-readable optical code is a one-dimensional code, a two-dimensional code, a matrix code, a barcode, or a QR code.

5. The digital image file of claim 1 , further comprising a plurality of second digital images of corresponding digital codes encoding information associated with or derived from the first digital image, and wherein when rendered visible the second digital images are machine-readable optical codes.

6. A method of storing a digital image file, comprising:

using a processor to receive a first digital image;

using the processor to form a second digital image of a digital code that encodes information associated with or derived from the first digital image and that when rendered visible is a machine-readable optical code, the second digital image separate and different from the first digital image; and

using the processor to produce the digital image file by storing in a retrievable storage medium the first digital image in an image portion of the digital image file and the second digital image in a separate information portion of the digital image file.

7. The method of claim 6 , further including using the processor to extract the information from the second digital image.

8. The method of claim 6 , further including encrypting the encoded information.

9. The method of claim 6 , using the processor to form the machine-readable optical code as a one-dimensional code, a two-dimensional code, a matrix code, a barcode, or a QR code.

10. The method of claim 6 , further comprising using the processor to form a plurality of second digital images of a corresponding plurality of digital codes that each encode information associated with or derived from the first digital image and that when rendered visible are machine-readable optical codes and using the processor to store the second digital images in the information portion of the digital image file.

11. The method of claim 6 , using the processor to analyze the first digital image to produce information derived from the first digital image and producing the digital code using the derived information.